The Cosmological OTOC: Formulating New Cosmological Micro-Canonical Correlation Functions for Random Chaotic Fluctuations in Out-of-Equilibrium Quantum Statistical Field Theory [PDF]
Symmetry, 2020 The out-of-time-ordered correlation (OTOC) function is an important new probe in quantum field theory which is treated as a significant measure of random quantum correlations.
Sayantan Choudhury
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Hybrid quantum-classical algorithm for computing imaginary-time correlation functions [PDF]
Physical Review Research, 2022 Quantitative descriptions of strongly correlated materials pose a considerable challenge in condensed matter physics and chemistry. A promising approach to address this problem is quantum embedding methods. In particular, the dynamical mean-field theory (
Rihito Sakurai +2 more
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Universe, 2020 In this work, we study the impact of quantum entanglement on the two-point correlation function and the associated primordial power spectrum of mean square vacuum fluctuation in a bipartite quantum field theoretic system.
Sayantan Choudhury, Sudhakar Panda
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The edge of chaos: quantum field theory and deep neural networks [PDF]
SciPost Physics, 2022 We explicitly construct the quantum field theory corresponding to a general class of deep neural networks encompassing both recurrent and feedforward architectures.
Kevin T. Grosvenor, Ro Jefferson
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Aspects of quantum information in finite density field theory [PDF]
Journal of High Energy Physics, 2021 We study different aspects of quantum field theory at finite density using methods from quantum information theory. For simplicity we focus on massive Dirac fermions with nonzero chemical potential, and work in 1 + 1 space-time dimensions.
Lucas Daguerre +3 more
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Convergent momentum-space OPE and bootstrap equations in conformal field theory [PDF]
Journal of High Energy Physics, 2020 General principles of quantum field theory imply that there exists an operator product expansion (OPE) for Wightman functions in Minkowski momentum space that converges for arbitrary kinematics.
Marc Gillioz +3 more
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Real-time scattering in Ising field theory using matrix product states
Physical Review ResearchWe study scattering in Ising field theory (IFT) using matrix product states and the time-dependent variational principle. IFT is a one-parameter family of strongly coupled nonintegrable quantum field theories in 1+1 dimensions, interpolating between ...
Raghav G. Jha +4 more
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Quantum-field-theory calculation of the two-dimensional Ising model correlation function
, 1977 The equivalence between the two-dimensional Ising model and a free fermion field theory is used to rederive various results for the two-spin correlation function in the critical region.
Myron Bander, C. Itzykson
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Bose-Einstein correlation function
, 2003 G. A. Kozlov, O. V. Utyuzh, G. Wilk
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Dynamical mean-field theory for the Hubbard-Holstein model on a quantum device [PDF]
Physical review B, 2023 Recent developments in quantum hardware and quantum algorithms have made it possible to utilize the capabilities of current noisy intermediate-scale quantum devices for addressing problems in quantum chemistry and condensed matter physics. Here we report
S. Backes +3 more
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